# Shared Flashcard Set

## Details

Momentum
N/A
15
Physics
04/30/2012

Term
 what is the momentum of a 70 kilo athlete running at 4m/s?
Definition
 70 x 4 = 280 kgm/s
Term
 what is the equation for momentum?
Definition
 momentum = mass x velocity
Term
 what is momentum?
Definition
 momentum is a way of describing how hard it is to change the motion of an object.
Term
 what happens if there is a large momentum?
Definition
 the greatter the momentum of an object, the harder it is to stop that object or change its motion.
Term
 the bigger the mass...
Definition
 ... the bigger the momentum.
Term
 the smaller the mass...
Definition
 ...the smaller the momentum.
Term
 how does the speed of an object affect the momentum?
Definition
 the faster the object, the bigger the momentum.
Term
 what is the momentum of a small car weighting 1000kg moving at 5m/s?
Definition
 momentum = 5 x 1000 = 5000kgm/s
Term
 a boat moving at 3m/s has a momentum of 600kgm/s. what is the boats mass?
Definition
 mass = momentum\velocitymass = 600\3 = 200kg
Term
 what happens to the momentum of an object if there is no velocity?
Definition
 if there is no velocity there is no momentum either
Term
 what is velocity measured in?
Definition
 velocity is neasured in m/s
Term
 what is momentum measured in?
Definition
 momentum is measured in kgm/s
Term
 what is mass measured in?
Definition
 mass is measured in kg
Term
 what does momentum depend on?
Definition
 momentum depends on the direction the object is travelling in.
Term
 what 2 factors could change the objects momentum?
Definition
 momentum can change if1) the object speeds up or slows down2) the object changes direction
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